Subtracting Mixed Numbers with Unlike Denominators Quiz

What is the first step in subtracting mixed numbers with unlike denominators?

• Convert the mixed numbers to improper fractions.

• Subtract the whole numbers first.

• Add the fractions together.

• Find the least common multiple of the denominators.

What is the purpose of setting the problem in stacked form?

• To align the whole numbers and fractions for subtraction.

• To convert the numbers to improper fractions.

• To make it easier to add the numbers.

• To find the greatest common factor.

How do you find a common denominator for the fractions 3/8 and 5/6?

• Multiply both denominators by 2.

• Find the least common multiple of 8 and 6.

• Add the denominators together.

• Use the larger denominator as the common denominator.

What do you do if the fraction part of the first mixed number is smaller than the second?

• Convert the mixed numbers to improper fractions.

• Subtract the whole numbers first.

• Add a whole number to the second mixed number.

• Rename the first mixed number to have a fraction greater than one.

In the example 7 and 2/5 minus 2 and 3/4, what is the common denominator?

• 25

• 20

• 15

• 10

How do you rename a mixed number to have a fraction greater than one?

• Subtract a whole number from the fraction.

• Add a whole number to the fraction.

• Multiply the fraction by 2.

• Convert the whole number to a fraction and add it to the existing fraction.

What is the result of subtracting 6 and 3/5 from 2 and 1/2?

• 3 and 2/10

• 4 and 2/10

• 3 and 1/10

• 4 and 1/10

Why is it necessary to rename mixed numbers when subtracting?

• To make the fractions improper.

• To ensure the fractions have a common denominator.

• To make the fraction part of the first number greater than the second.

• To simplify the fractions.

In the final example, what is the common denominator for 1/4 and 5/6?

• 8

• 10

• 12

• 14

What is the final answer for the subtraction of 5 and 1/4 minus 2 and 5/6?

• 2 and 5/12

• 3 and 7/12

• 3 and 5/12

• 2 and 7/12